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Finding the Fourth Proportional to 20,047.95, 30,071.93 and 5,256.81

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Solution

The fourth proportional to 20,047.95, 30,071.93 and 5,256.81 is: 7,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.95 : 30,071.93 = 5,256.81 : x
  2. Step 2: Convert to fraction form
    20,047.95/30,071.93 = 5,256.81/x
  3. Step 3: Cross multiply
    20,047.95x = 30,071.93 × 5,256.81
  4. Step 4: Simplify right side
    20,047.95x = 158,082,396.06
  5. Step 5: Solve for x
    x = 158,082,396.06/20,047.95
  6. Step 6: Final answer
    x = 7,885.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.